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Finding the Fourth Proportional to 171,036.90, 256,117.95 and 126,422.10

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Solution

The fourth proportional to 171,036.90, 256,117.95 and 126,422.10 is: 189,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,036.90 : 256,117.95 = 126,422.10 : x
  2. Step 2: Convert to fraction form
    171,036.90/256,117.95 = 126,422.10/x
  3. Step 3: Cross multiply
    171,036.90x = 256,117.95 × 126,422.10
  4. Step 4: Simplify right side
    171,036.90x = 32,378,969,086.70
  5. Step 5: Solve for x
    x = 32,378,969,086.70/171,036.90
  6. Step 6: Final answer
    x = 189,309.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.